When No. 11 in blue took the field in shoulder pads and helmet with his teammates Sunday morning for practice at the Virginia Mason Athletic Center, the curiosity ended over Harvin being granted three days last week — including missing the exhibition finale last Thursday at Oakland — to deal with what coach Pete Carroll and the team said were “personal matters.”

Seattle’s newly recharged wide receiver was back zooming throughout the team’s first practice of the regular season. That indicates Harvin will be fully ready for Thursday’s NFL opener at home against Green Bay.

“That type of explosiveness on the field is great to have,” fellow wide receiver Jermaine Kearse said. “We are excited to have him back.”

Harvin had offseason hip surgery. He said a couple weeks ago that this is the fastest and healthiest he’s felt since “before college” at Florida a decade ago.

Packers coach Mike McCarthy coached against both the relatively healthy Harvin and the relatively banged-up version while the wide receiver was starring for Minnesota in the NFC North through the 2012 season. Harvin’s rookie season of 2009 was McCarthy’s fourth season leading the Packers.

Harvin’s only season in which he’s been healthy enough to play in all 16 regular-season games was in 2011, when he set career highs of 87 catches and 967 yards and tied his single-season high with six touchdown catches. That year Harvin had eight catches for 67 yards — with 50 of those yards after the catch — in two games against McCarthy’s Packers. But Harvin didn’t score against Green Bay, which beat the Vikings 33-27 in Minneapolis and 45-7 in Wisconsin that season.

“Percy is one of those unique players that can score every time he touches the ball. So that in itself speaks volumes,” McCarthy said. “He’s a dynamic player, whether it’s kickoff returns, (as receiver) from the slot, or moving him into the backfield or the speed sweeps and all the different combinations and things they do with him. He’s definitely an impact player.”

EIGHT ADDED TO PRACTICE SQUAD

The Seahawks announced their practice squad following the end of the league's Saturday-to-Sunday waiver period. All the practice squad players were in Seattle's training camp and preseason, and they practiced Sunday.

The team has two more spots it can fill, as the league for the first time this season allows up to 10 players on a practice squad.

LINEBACKERS A-PLENTY IN GREEN BAY

The Packers have 11 linebackers and five defensive linemen on their active roster. Those are the most linebackers and fewest down linemen among the NFL teams that primarily employ 3-4 defensive schemes.

McCarthy said the Pack went to that arrangement because of lessons learned the last few seasons. Green Bay’s defense ranked 25th in yards allowed (372) and points allowed (26.8) per game last season.

“We’re trying to learn from our past experiences and, frankly, we want to play more defensive personnel,” McCarthy said. “It gives us flexibility to have a better rotation that we really haven’t had the past two years because of our injuries. Just the ability to rotate our guys in there.

“Our team speed on defense has improved since last year. I think that’s something that was evident in the preseason games.”

The linebacker-heavy arrangement could invite Seahawks offensive coordinator Darrell Bevell to use more power runs with Marshawn Lynch behind an offensive line that could end up mismatched on Green Bay’s lighter linebackers inside.

EXTRA POINTS

Undrafted rookie MLB Brock Coyle gets a new jersey number for making the Seahawks: 52. Third TE Cooper Helfet is now 84. New CB Marcus Burley is wearing number 28. The Seahawks acquired him Saturday from Indianapolis for a sixth-round choice in the 2015 draft. The second-year man from Delaware was active for one game last season with Jacksonville. He said he was surprised with the trade but excited about getting the welcome call Saturday from coach Pete Carroll. Asked if he’s done any kick returning, Burley said he ran back kickoffs at Delaware and punts only in his redshirt freshman season. … DE Benson Mayowa, Seattle’s undrafted camp star last summer whom the Seahawks cut on Saturday because O’Brien Schofield beat him out for the weak-side pass-rush job, was claimed off waivers Sunday by Oakland and put onto the Raiders’ active roster. Oakland plays at Seattle on Nov. 2. … The NFL is putting on a two-day kickoff fan fest in Seattle’s Pioneer Square, at the corner of 2nd Avenue South and South King Street. The north parking lot of CenturyLink Field is the site of Thursday’s pregame concert with Soundgarden and Pharrell Williams beginning a few hours before kickoff. The events for both days are free to the public.